Mii-kun stops by to help tutor her senpai, and as she recites from "An Account of My Hut" Yuki exclaims that old books are like letters from the past.

Sora's dad sends him a mummy from Egypt. It's tiny, shy, and adorable. Now Sora's got a palm-sized problem named Mii-kun. How to Keep a Mummy Season 1 aired on January 12th, 2018.